Chart Beat Thursday: Justin Bieber, Train, Scorpions
Sheryl Nields

Demi Lovato rules the Billboard 200 chart this week, as the Disney singer/actress' sophomore album "Here We Go Again" (Hollywood Records) debuts at No. 1 with 108,000 copies sold, according to Nielsen SoundScan. Her first set, "Don't Forget," bowed at No. 2 less than a year ago with 89,000.

Lovato's debut marks the fourth No. 1 album of the year for Disney Music Group - a record for the company. Previous chart-toppers in 2009 were Rascal Flatts' "Unstoppable,"the "Hannah Montana: The Movie" soundtrack and Jonas Brothers' "Lines, Vines and Trying Times." Disney had three albums debut at No. 1 in both 2007 and 2006.

But while Lovato ruled the Billboard 200, Michael Jackson once again had the best-selling album. The King of Pop's 2003 hits set "Number Ones" tops the all-encompassing Top Comprehensive Albums chart by shifting 154,000 copies, down 21% from the week prior. (Top Comprehensive Albums ranks the top selling albums in the country, regardless of age; whereas the Billboard 200 houses only new and current titles -- generally those less than 18 months old.)

Elsewhere on the Billboard 200, Jordin Sparks' sophomore album "Battlefield" fights its way to a No. 7 debut, selling 48,000 copies. It's the "American Idol" winner's second top 10 set, as her 2007 self-titled debut entered and peaked at No. 10 with 119,000.

Last week's No. 1 album, Daughtry's "Leave This Town," falls to No. 2 with just under 101,000 copies (down 63%). Maxwell's "BLACKsummers'night" slips one spot to No. 3 with 72,000 (down 30%) while the "Now 31" album holds at No. 4 with 58,000 (down 17%). The "Hannah Montana 3" TV soundtrack falls to slots to No. 5 with 54,000 (down 26%) while the Black Eyed Peas' "The E.N.D." is down one to No. 6 with 52,000 (down 4%).

Rounding out the top 10 is Kings of Leon's "Only By The Night" moving up two positions to No. 8 with 39,000 (up 19%), Taylor Swift's "Fearless" staying course at No. 9 with 37,000 (up less than 2%) and Lady GaGa's "The Fame" climbing one rung to No. 10 with 28,000 (down 9%).

Overall album sales in this past chart week (ending July 26) totaled 6.25 million units, down 7.8% compared to the sum last week (6.78 million) and down 20.3% compared to the same sales week of 2008 (7.84 million). Year to date album sales stand at 201.7 million, down 14.1% compared to the same total at this point last year (234.9 million).